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SSI Freediving level 1

Complete theory presentation for SSI Freediving Level 1
by

Javier Porras

on 2 June 2015

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Transcript of SSI Freediving level 1

SSI Freediving
Level 1
The
respiratory
system
The air we breath contains:

21% Oxygen
78% Nitrogen
0,03% carbon dioxide
The body mantains
normal levels of
oxygen and CO2,
when breathing normally
Hyperventilation
It's the act of breathing more then needed for the activity we're doing
Effects of hyperventilation:
Higher heart rate (more O2 consumption)
Cerebral vasoconstriction *
Bohr effect
Lower levels of CO2*
The urge to breath is triggered by high concentration of CO2
Remember:
Proper breathing will
add safety to all your dives
The
environment
Fresh water
Salt water
We should be able to plan a freediving sesion based on environmental factors
Wind
Waves
Tides
Water movements
Currents:
Shoreline currents
Rip currents
If you find yourself caught on a current, stablish positive buoyancy and signal for help.
Do not fight the current
Remember:
Get proper orientation when freediving in a new area
Freediving equipment
Proper freediving equipment will add safety and comfort to all your dives
Do not freedive after scuba diving
wait 12 hours +
Alpha flag
Diver below
Safety
What is a Shallow Water Blackout ( SWB / BO )
and Loss of Motor Control ( LMC )?
A loss of consciousness is caused by low levels of oxygen in the brain
That's why we use the one up / one down buddy system
The safety diver is looking for signs:

Bubbles
Stop kicking
Shaking
Blue lips
Eyes moving
Loss of balance
But there are also symptoms:

Tunnel vision
Blurry vision
Loss of balance
Proper breath-up
Use proper equipment / Weight
Don't push your limits:
too long, too deep, too far
Proper recovery breathing
How to avoid BO/SWB:
How to deal with a Blackout / Shallow Water Blackout
RRR
Identify the problem
Rescue to surface
Support the freediver
Rescue
Response
Remove mask
Blow
Tap
Talk
Perform
recovery breathing
Drop the weights if needed
Revive
Up to 3 rescue breaths
Tow to safety
Give rescue breaths every 5 sec.
Call EMS
Stop freediving for the day
Remember:
Never freedive alone
Disciplines
Sea disciplines
Constant weight
Free immersion
With fins
No fins
With fins
No fins
Pool disciplines
Dynamic swimming
Static apnea
Mammalian diving reflex
It can be triggered by:
Facial immersion
Rising levels of CO2
Pressure
This will lead into:
Bradycardia
Peripheral vasoconstriction
Blood shift
Spleen effect
Helping us to achieve....
Deeper relaxation
Extended dive times
Better handling of pressure
The more you train, the stronger and quicker your MDR will be
Pressure
Equalization
1 ATM / 1 BAR
Always freedive on full lungs
Never take air from a scuba diver
Frenzel maneuver
Valsalva maneuver
Give it a try
Pressure affects air spaces:
Lungs
Ears
Sinuses
Mask
Hood*
Underwater life
The oceans and waterways are places deserving of respect
Always dive as a visitor, a guest in this new environment
Please
Do not touch anything!
Enjoy and respect the environment
Keep learning, training and freediving
The simptoms are:
Dizzines
Numbness
Tingling
Lightheaded
Impaired hearing
Loss of balance
Full transcript